Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
Hangers for extension
Where to put the extension cord? - A question arises every time when switching off the iron or other household appliance, we are trying to attach long cord collected rings. To solve this...
THE WINNING STARTS!
Thousands of children are engaged in the sections of sports clubs DOSAAF, creating and testing a variety of model-copy, high-speed kordovye, RC — in accordance with his inclination....
